A delayed power-off system for an automatic driving controller

Abstract

The present invention discloses a delayed power-off system for an automatic driving controller. The system can continue to supply power to the unmanned driving controller for a period of time when the vehicle turns off the key switch and loses power through the delayed control of a time relay, thereby ensuring that the unmanned driving controller can complete the normal shutdown of the application program and the operating system, and solving the problems of software crash of the unmanned driving system and shortened hardware life caused by direct power off. The method has strong reliability and practicality.

Description

Technical Field

[0001] The invention relates to a highly practical automatic driving controller delayed power-off system, belonging to the technical field of unmanned vehicle electrical control and automotive electronics. Background Art

[0002] Traditional automotive microcontrollers are controlled by single-chip microcomputers, which can directly cut off the power and terminate the working state when the vehicle stops working. However, for driverless cars, due to the complex hardware and software structure of the driverless control system, the traditional instant power-off method will endanger the software and hardware security of the system. Long-term use of the instant power-off method is prone to software crashes and shortened hardware life. Therefore, for driverless controllers, it is necessary to give a certain shutdown time after issuing the power-off command, so that the driverless controller can complete the safe shutdown of application software, operating system, etc., to ensure the normal operation of the future system. Summary of the invention

[0003] The purpose of the present invention is to provide a highly practical automatic driving controller delayed power-off system, which can achieve safe shutdown and power-off of the unmanned driving controller by delaying the power-off of the system.

[0004] To achieve the above object, the technical solution adopted by the present invention is:

[0005] A delayed power-off system for an automatic driving controller includes an original vehicle power supply, an automatic driving system power supply, an automatic driving controller, a key switch, and a bottom controller.

[0006] The power supply of the autonomous driving system is connected to the autonomous driving controller and the bottom-level controller to complete the power supply to the autonomous driving controller and the bottom-level controller. The original vehicle power supply is connected to the signal input terminal of the bottom-level controller through the key switch to complete the signal input to the bottom-level controller.

[0007] Its characteristics are that it also includes insurance, time delay relay and gateway.

[0008] The power supply of the automatic driving system is connected to the automatic driving controller through insurance and delay relay to complete the power supply to the automatic driving controller.

[0009] The key switch is connected to the signal input terminal of the delay relay to complete the on-off control of the relay.

[0010] The signal output end of the underlying controller is connected to the gateway, and the gateway is connected to the signal input end of the autonomous driving controller. The gateway converts the power-off signal sent by the underlying controller and sends it to the autonomous driving controller.

[0011] The delayed power-off system of the automatic driving controller is characterized in that the automatic driving controller is one or more of an industrial computer, a GPU, a FPGA, and an ASIC.

[0012] The delayed power-off system of the automatic driving controller is characterized in that the underlying controller is an in-vehicle microcontroller with a CAN network communication protocol.

[0013] The delayed power-off system of the automatic driving controller is characterized in that the gateway has part or all of the CAN network, Ethernet, serial port, LIN bus, and FlexRay bus interfaces.

[0014] A control method based on the delayed power-off system of an automatic driving controller is characterized by comprising the following steps:

[0015] a. Key switch off: Turn off the key switch, the original vehicle power supply is disconnected from the underlying controller and the delay relay.

[0016] b. The bottom controller sends a power-off command: After receiving the shutdown signal from the switch key, the bottom controller sends a power-off command to the gateway.

[0017] c. The delay relay receives the signal and starts delaying: After the delay relay receives the power-off signal from the key switch, it enters the delay relay stage based on the signal. The delay time is the preset time of the relay.

[0018] d. The gateway converts and sends the signal: After receiving the power-off signal from the underlying controller, the gateway converts the signal into a signal that the autonomous driving controller can understand and sends it to the autonomous driving controller.

[0019] e. The autopilot controller receives the signal and shuts down: The autopilot controller is kept powered on by the delay control of the delay relay. After receiving the power-off signal from the gateway, it shuts down through the normal shutdown procedure.

[0020] f. Delay relay delay ends: the delay relay completes the delay according to the preset time, and the relay is disconnected.

[0021] g. Power off of the autonomous driving system: After the relay is disconnected, the connection between the autonomous driving power supply and the autonomous driving controller is cut off, and the autonomous driving system is powered off. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Schematic diagram of the delayed power-off system for the autonomous driving controller

[0023] Figure 2 Working flow chart of delayed power-off system for autopilot controller DETAILED DESCRIPTION

[0024] The delayed power-off system of the automatic driving controller is described in detail below with reference to the accompanying drawings.

[0025] Figure 1 It is a schematic diagram of the delayed power-off system of the autonomous driving controller, wherein the autonomous driving system power supply 1 is used to supply power to the autonomous driving controller and the bottom-level controller. The fuse 2 is used to protect the autonomous driving controller. The delay relay 3 is a time relay with instantaneous power-on and delayed power-off functions, and the delay time is adjustable, which is used to control the on-off and delay of the power supply circuit of the autonomous driving controller. The autonomous driving controller 4 is used to control the autonomous driving system, and can be one or more of an industrial computer, GPU, FPGA, and ASIC. The key switch 5 is used to control the on-off of the original vehicle power circuit. The bottom-level controller 6 is used for the bottom-level control of the vehicle and to issue a power-off command to the autonomous driving controller. The gateway 7 is used for communication conversion between the bottom-level controller and the autonomous driving controller.

[0026] Figure 2 The following is a flowchart of the delayed power-off system of the automatic driving controller. The control method of the delayed power-off system of the automatic driving controller is explained below.

[0027] The specific steps include:

[0028] a. Key switch off: Turn off the key switch, the original vehicle power supply is disconnected from the underlying controller and the delay relay.

[0029] b. The bottom controller sends a power-off command: After receiving the shutdown signal from the switch key, the bottom controller sends a power-off command to the gateway.

[0030] c. The delay relay receives the signal and starts delaying: After the delay relay receives the power-off signal from the key switch, it enters the delay relay stage based on the signal. The delay time is the preset time of the relay.

[0031] d. The gateway converts and sends the signal: After receiving the power-off signal from the underlying controller, the gateway converts the signal into a signal that the autonomous driving controller can understand and sends it to the autonomous driving controller.

[0032] e. The autopilot controller receives the signal and shuts down: The autopilot controller is kept powered on by the delay control of the delay relay. After receiving the power-off signal from the gateway, it shuts down through the normal shutdown procedure.

[0033] f. Delay relay delay ends: the delay relay completes the delay according to the preset time, and the relay is disconnected.

[0034] g. Power off of the autonomous driving system: After the relay is disconnected, the connection between the autonomous driving power supply and the autonomous driving controller is cut off, and the autonomous driving system is powered off.

Claims

1. An automatic driving controller delayed power-off system, comprising an original vehicle power supply, an automatic driving system power supply, an automatic driving controller, a key switch, and a bottom controller. The power supply of the autonomous driving system is connected to the autonomous driving controller and the bottom-level controller to complete the power supply to the autonomous driving controller and the bottom-level controller. The original vehicle power supply is connected to the signal input terminal of the bottom-level controller through the key switch to complete the signal input to the bottom-level controller. It is characterized in that It also includes insurance, time delay relays and gateways. The power supply of the automatic driving system is connected to the automatic driving controller through insurance and time delay relay to complete the power supply to the automatic driving controller. The key switch is connected to the signal input terminal of the delay relay to complete the on-off control of the relay. The signal output end of the underlying controller is connected to the gateway, and the gateway is connected to the signal input end of the autonomous driving controller. The gateway converts the power-off signal sent by the underlying controller and sends it to the autonomous driving controller.

2. The delayed power-off system of the automatic driving controller according to claim 1 is characterized in that: The autonomous driving controller is one or more of an industrial computer, a GPU, a FPGA, and an ASIC.

3. The delayed power-off system of the automatic driving controller according to claim 1 is characterized in that: The bottom-level controller is an in-vehicle microcontroller with a CAN network communication protocol.

4. The delayed power-off system of the automatic driving controller according to claim 1 is characterized in that: The gateway has some or all of the CAN network, Ethernet, serial port, LIN bus, and FlexRay bus interfaces.

5. A control method based on the delayed power-off system of an automatic driving controller according to claim 1, characterized in that: The following steps are involved: a. Key switch off: Turn off the key switch, the original vehicle power supply is disconnected from the underlying controller and the delay relay. b. The bottom controller sends a power-off command: After receiving the shutdown signal from the switch key, the bottom controller sends a power-off command to the gateway. c. The delay relay receives the signal and starts delaying: After the delay relay receives the power-off signal from the key switch, it enters the delay relay stage based on the signal. The delay time is the preset time of the relay. d. The gateway converts and sends the signal: After receiving the power-off signal from the underlying controller, the gateway converts the signal into a signal that the autonomous driving controller can understand and sends it to the autonomous driving controller. e. The autopilot controller receives the signal and shuts down: The autopilot controller is kept powered on by the delay control of the delay relay. After receiving the power-off signal from the gateway, it shuts down through the normal shutdown procedure. f. Delay relay delay ends: the delay relay completes the delay according to the preset time, and the relay is disconnected. g. Power off of the autonomous driving system: After the relay is disconnected, the connection between the autonomous driving power supply and the autonomous driving controller is cut off, and the autonomous driving system is powered off.

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